Practice Crash Course - GATE - CSIT, DSAI & Interview Preparation Offered by Unacademy

SELF STUDY

Browse Practice Tests Playlist Doubts & solutions Free live classes Other courses

Crash Course

Quick practice

Question 1 of 5

Let S = {AX : A = $\left[\begin{array}{cc} 2 & -4 \\ 1 & 1 \\ 1 & -1 \end{array}\right]$ and X = ______.

A

4

B

2

C

-2

D

-4